一个长、宽、高分别为 32.5 cm、22.5 cm 和 18 cm 的长方体水槽中已装有 $\frac{5}{9}$ 的水，如下图所示。当 Kamala 向水槽中倒入 7 升水时，有一些水溢出了。求溢出的水的体积。请用“升”作答。 答：___

1. Calculate the total capacity of the rectangular tank

$\text{Capacity} = 32.5 \times 22.5 \times 18 = 13162.5 \text{ cm}^3$

2. Find the volume of the empty space in the tank

$\text{Fraction of empty space} = 1 - \frac{5}{9} = \frac{4}{9}$
$\text{Volume of empty space} = \frac{4}{9} \times 13162.5 = 5850 \text{ cm}^3$

3. Calculate the volume of water that overflowed and convert to litres

$\text{Volume of water added} = 7 \text{ litres} = 7000 \text{ cm}^3$
$\text{Volume overflowed} = 7000 - 5850 = 1150 \text{ cm}^3$
$\text{Volume in litres} = \frac{1150}{1000} = 1.15 \text{ litres}$